<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>三元运算符</title>
</head>
<body>

    
    <script>
        
        // 建议写法

        let flag = "function";
        flag=="function"
        ?alert(1)
        :alert(2);
    
    
    </script>
</body>
</html>